From 6a2d9e8ec38a6764d1170afc7a086adcffb8d09c Mon Sep 17 00:00:00 2001
From: UbitUmarov <ajlduarte@sapo.pt>
Date: Tue, 31 Jan 2023 17:16:33 +0000
Subject: [PATCH] mantis 9056: add llReplaceSubString()

---
 .../Shared/Api/Implementation/LSL_Api.cs      | 35 +++++++++++++++++++
 .../Shared/Api/Interface/ILSL_Api.cs          |  1 +
 .../Shared/Api/Runtime/LSL_Stub.cs            |  5 +++
 3 files changed, 41 insertions(+)

diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 1fcd58fa24..ea37803525 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -18668,6 +18668,41 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             }
             return hash;
         }
+
+        public LSL_String llReplaceSubString(LSL_String src, LSL_String pattern, LSL_String replacement, int count)
+        {
+            RegexOptions RegexOptions;
+            if (count < 0)
+            {
+                RegexOptions = RegexOptions.CultureInvariant | RegexOptions.RightToLeft;
+                count = -count;
+            }
+            else
+            {
+                RegexOptions = RegexOptions.CultureInvariant;
+                if (count == 0)
+                    count = -1;
+            }
+
+            try
+            {
+                if (string.IsNullOrEmpty(src.m_string))
+                    return src;
+
+                if (string.IsNullOrEmpty(pattern.m_string))
+                    return src;
+
+                Regex rx = new Regex(pattern, RegexOptions, new TimeSpan(500000)); // 50ms)
+                if (replacement == null)
+                    return rx.Replace(src.m_string, string.Empty, count);
+
+                return rx.Replace(src.m_string, replacement.m_string, count);
+            }
+            catch
+            {
+                return src;
+            }
+        }
     }
 
     public class NotecardCache
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs
index c188c11391..66562915c3 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs
@@ -486,5 +486,6 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Interfaces
          LSL_String llChar(LSL_Integer unicode);
         LSL_Integer llOrd(LSL_String s, LSL_Integer index);
         LSL_Integer llHash(LSL_String s);
+         LSL_String llReplaceSubString(LSL_String src, LSL_String pattern, LSL_String replacement, int count);
     }
 }
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs
index b722f41c6c..c7ccfb2b39 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs
@@ -2209,5 +2209,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
         {
             return m_LSL_Functions.llHash(s);
         }
+
+        public LSL_String llReplaceSubString(LSL_String src, LSL_String pattern, LSL_String replacement, int count)
+        {
+            return m_LSL_Functions.llReplaceSubString(src, pattern, replacement, count);
+        }
     }
 }